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clang-p2996/llvm/test/Transforms/LoopVectorize/AArch64
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David Sherwood 92c645b5c1 [LoopVectorize] Add overflow checks when tail-folding with scalable vectors 
In InnerLoopVectorizer::getOrCreateVectorTripCount there is an
assert that the known minimum value for the VF is a power of 2
when tail-folding is enabled. However, for scalable vectors the
value of vscale may not be a power of 2, which means we have
to worry about the possibility of overflow. I have solved this
problem by adding preheader checks that prevent us from entering
the vector body if the canonical IV would overflow, i.e.

  if ((IntMax - TripCount) < (VF * UF)) ... skip vector loop ...

Differential Revision: https://reviews.llvm.org/D125235
2022-05-13 14:09:43 +01:00
..
aarch64-predication.ll
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aarch64-unroll.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
arbitrary-induction-step.ll
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arm64-unroll.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
backedge-overflow.ll
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deterministic-type-shrinkage.ll
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eliminate-tail-predication.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
extend-vectorization-factor-for-unprofitable-memops.ll
Revert "[AArch64] Set maximum VF with shouldMaximizeVectorBandwidth"
2022-04-13 04:53:07 +05:00
extractvalue-no-scalarization-required.ll
…
first-order-recurrence.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
gather-cost.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
induction-trunc.ll
[LV] Make some tests more robust by adding missing users.
2022-01-24 13:04:09 +00:00
interleaved_cost.ll
[NFC][LV] Use different braces in debug output
2022-03-07 19:32:37 +03:00
interleaved-store-of-first-order-recurrence.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
interleaved-vs-scalar.ll
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intrinsiccost.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
lit.local.cfg
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loop-vectorization-factors.ll
Revert "[AArch64] Set maximum VF with shouldMaximizeVectorBandwidth"
2022-04-13 04:53:07 +05:00
loopvectorize_pr33804_double.ll
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masked-op-cost.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
max-vf-for-interleaved.ll
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maximize-bandwidth-invalidate.ll
[LV] Invalidate widening decisions after maximizing vector bandwidth
2022-03-31 09:19:31 +01:00
no_vector_instructions.ll
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nontemporal-load-store.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
outer_loop_test1_no_explicit_vect_width.ll
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Oz-and-forced-vectorize.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
pr31900.ll
[LV] Make some tests more robust by adding missing users.
2022-01-24 13:04:09 +00:00
pr33053.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
pr36032.ll
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pr46950-load-cast-context-crash.ll
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predication_costs.ll
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reduction-small-size.ll
Revert "[AArch64] Set maximum VF with shouldMaximizeVectorBandwidth"
2022-04-13 04:53:07 +05:00
runtime-check-size-based-threshold.ll
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scalable-alloca.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
scalable-avoid-scalarization.ll
[VPlan] Avoid collecting scalars for SVE
2022-03-16 16:33:34 +00:00
scalable-call.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
scalable-predicate-instruction.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
scalable-reduction-inloop-cond.ll
[LoopVectorize] Support conditional in-loop vector reductions
2022-02-22 12:04:35 +00:00
scalable-reductions.ll
[LoopVectorize] Support reductions that store intermediary result
2022-05-03 10:12:30 +01:00
scalable-strict-fadd.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
scalable-vectorization-cost-tuning.ll
Revert "[AArch64] Set maximum VF with shouldMaximizeVectorBandwidth"
2022-04-13 04:53:07 +05:00
scalable-vectorization.ll
Revert "[AArch64] Set maximum VF with shouldMaximizeVectorBandwidth"
2022-04-13 04:53:07 +05:00
scalable-vf-hint.ll
[NFC][LV] Use different braces in debug output
2022-03-07 19:32:37 +03:00
scalar_interleave.ll
[LoopVectorizer] Don't perform interleaving of predicated scalar loops
2022-02-07 19:34:28 +00:00
scalarize-store-with-predication.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
sdiv-pow2.ll
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select-costs.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
smallest-and-widest-types.ll
[NFC][LV] Use different braces in debug output
2022-03-07 19:32:37 +03:00
strict-fadd-cost.ll
…
strict-fadd-vf1.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
strict-fadd.ll
[VPlan] Do not create VPWidenCall recipes for scalar vector factors.
2022-05-02 19:40:33 +01:00
sve-basic-vec.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
sve-cond-inv-loads.ll
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sve-epilog-vect-inloop-reductions.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
sve-epilog-vect-reductions.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
sve-epilog-vect-strict-reductions.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
sve-epilog-vect.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
sve-extract-last-veclane.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
sve-gather-scatter-cost.ll
[NFC][LV] Use different braces in debug output
2022-03-07 19:32:37 +03:00
sve-gather-scatter.ll
[LV] Create & use VPScalarIVSteps for all scalar users.
2022-03-13 17:15:24 +00:00
sve-illegal-type.ll
Revert "[AArch64] Set maximum VF with shouldMaximizeVectorBandwidth"
2022-04-13 04:53:07 +05:00
sve-inductions-unusual-types.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
sve-inductions.ll
[LV] Create & use VPScalarIVSteps for all scalar users.
2022-03-13 17:15:24 +00:00
sve-inv-loads.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
sve-inv-store.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
sve-large-strides.ll
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sve-masked-loadstore.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
sve-scalable-load-in-loop.ll
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sve-select-cmp.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
sve-strict-fadd-cost.ll
…
sve-tail-folding-forced.ll
[LoopVectorize] Add overflow checks when tail-folding with scalable vectors
2022-05-13 14:09:43 +01:00
sve-tail-folding-unroll.ll
[LoopVectorize] Add overflow checks when tail-folding with scalable vectors
2022-05-13 14:09:43 +01:00
sve-tail-folding.ll
[LoopVectorize] Add overflow checks when tail-folding with scalable vectors
2022-05-13 14:09:43 +01:00
sve-type-conv.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
sve-vector-reverse-mask4.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
sve-vector-reverse.ll
…
sve-widen-extractvalue.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
sve-widen-gep.ll
[VPlan] Model pre-header explicitly.
2022-04-09 14:19:47 +02:00
sve-widen-phi.ll
[IR] Allow constant folding (insertelement <vscale x 2 x i32> zeroinitializer, i32 0, i32 i32 0.
2022-04-15 17:44:32 -07:00
tail-fold-uniform-memops.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
type-shrinkage-insertelt.ll
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unsafe-vf-hint-remark.ll
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veclib-calls-libsystem-darwin.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00
vector-reverse-mask4.ll
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vector-reverse.ll
Revert "[NFCI] Regenerate SROA/LoopVectorize test checks"
2022-04-04 01:15:30 +02:00